This one is kind of strange, considering there isn't a fandom for this crossover. Once on this Island, Jr. is a musical based on the original story of The Little Mermaid. As soon as I listened to it for the first time, I was planning how the Undertale characters would fit into it. Toriel would be Asaka, Frisk would be Ti Moune, Undyne would be Agwe, etc. So, expect plenty more of these.
Once on this Island, Jr. is by Lynn Ahrens and Stephen Flaherty Undertale is by Toby Fox
